Replies

Question, sir.

I know that church canon says that Mary was conceived free from the stain of original sin. Is it also canon that she never sinned during her life, or is that a common teaching that has not been accepted as canon?

Not trolling, I really don’t know the answer.

(I wouldn't use "canon" the way you are using it, but that's just me.)

Yes, the dogma (="stuff to be taught") is that she never sinned.

I'm going to give you my Immaculate Conception links. The dogma is explained therein.

Pope's Immaculate Conception Address At The Spanish Steps (Catholic Caucus)
Catholics...and Immaculate Mary
Why Catholics Believe in the Immaculate Conception
IMMACULATE CONCEPTION NOVENA [Prayer]

Essays for Lent: The Immaculate Conception
Pope Hghlights Mary's Role as 'Woman of the Apocalypse' [Catholic/Orthodox Caucus]
"I Am The Immaculate Conception"
The Corona of the Immaculate Conception [Catholic Caucus]
Catholic Caucus: Immaculate Conception Novena Prayer Thread
New chapel dedicated to Our Lady of Lebanon at National Shrine of the Immaculate Conception
Feast of the The Conception by St. Anna of the Most Holy Theotokos December 9th
On the Immaculate Conception
Immaculate Mary: "Trust Jesus, he will save you" (Catholic Caucus)
I Love that Woman! My Unworthy Reflections on The Immaculate Conception

LAND OF MARY IMMACULATE [Ecumenical]
Mary as the New Eve - St. Irenaeus
Mary - the Immaculate Ark of the New Covenant [Catholic Caucus]
THE LIFE OF BLESSED JOHN DUNS SCOTUS, Defender of the Immaculate Conception [Catholic Caucus]
An Unfathomable Marian Richness [Catholic Caucus]
Catholic Biblical Apologetics: The Immaculate Conception of Mary
History of the Feast of the Immaculate Conception - December 8 [Catholic Caucus]
Preserved Sinless from the Moment of Humanity (Dogma of the Immaculate Conception) [Catholic Caucus]
I Love that Woman! My Unworthy Reflections on The Immaculate Conception [Catholic Caucus]
Father Marquette's Devotion to the Immaculate Conception (Catholic Caucus)

St. John Neumann and the Doctrine of the Immaculate Conception (Catholic Caucus)
Our Jewish Roots: The Immaculate Conception [Ecumenical]
And It Was Night. The Real Story of Original Sin [Ecumenical]
I Love that Woman! My Unworthy Reflections on The Immaculate Conception
Mary Immaculate: Patroness of the United States [Catholic/Orthodox Caucus]
Catholic/Orthodox Caucus: The Immaculate Conception: A Marvelous Theme - Novena Starts Nov. 30
THE IMMACULATE CONCEPTION - Satan's Mighty Foe(Catholic Caucus)
Ark of the new covenant
Historian reveals how Pius IX decided to proclaim dogma of Immaculate Conception (Catholic Caucus)
The Immaculate Vs. the Proud

Immaculate Conception Novena -- starts November 30th [Catholic/Orthodox Caucus]
Blessed John Duns Scotus Champion Of Mary's Immaculate Conception (CATHOLIC CAUCUS)
The Crusade of Mary Immaculate - St. Maximilian Kolbe (Catholic Caucus)
The Early Church Fathers on the Immaculate Conception - Catholic/Orthodox Caucus
Three Reasons the Church’s Enemies Hate The Immaculate Conception
Her saving grace - the origins of the Immaculate Conception
Mary Is a Model Who Works With Us and in Us
U.S. Catholic bishops to renew consecration of nation to Immaculate Conception
Catholic Meditation: To the Immaculate Conception on this Election Day
Saint Bernadette of Lourdes (Sermon from 1934)